I�m experimenting with separate the widget from the skin� problem is sometimes theming is just change colors, but some others is widget building it self, so we will need widget factories (for theme), etc.�all is doable, but all implies time :)On 07 Jan 2014, at 11:07, St�phane Ducasse <Stephane.Ducasse@inria.fr> wrote:I think this is too convoluted because, like Estaban says, you want to keep the theming orthogonal with widget definition.Yes I do not like it either.But, you gave me an idea:If we implement in Morph the followings:Morph>>themer� � ^ themer ifNil: [self themerFor: self theme]what would be self theme I do not really like the idea to have all the morph talking to UITheme�theme^ UITheme current�is not sexy to me�Morph>>themerFor: aTheme� � ^ self subclassResponsibilityAnd then in a morph we would have something like this:SpotlightItemMorph>>themerFor: aTheme� � ^ aTheme�spotterThemerSpotlightItemMorph>>onSelectedself themer configureSelectedItemMorph: self�Then we could simply do pretty much what you want:SpotlightItemMorph new themer: MySpotterThemer new.I like this idea. What do you think?I do not know. Now what is clear is that we need strategy as in your original design. I was thinking about that too.Stef